Python Example of main() Module for Initializing a Program
#!/usr/bin/python3
'''
FileName: main_example.py
Author: nick3499
Created: Fri Jan 20 2017
Python Version: 3.5
'''
import turtle
def main():
t = turtle.Turtle()
if __name__ == "__main__":
main()
'''
A main() function, like this, initializes a program.
The if statement evaluates to True
before this module runs as stand-alone.
And `__name__` is `__main__`.
The if statement evaluates to False
when this module is imported into another module with an import statement.
And `__name__` is `main_example`.
'''